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Remote bootstrapping a node over communication link by initially requesting remote storage access program which emulates local disk to load other programs

  • US 5,146,568 A
  • Filed: 09/06/1988
  • Issued: 09/08/1992
  • Est. Priority Date: 09/06/1988
  • Status: Expired due to Term
First Claim
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1. A method of downline loading an executable bootstrapping image from a host computer over a communications link to a node, said node having an interface through which it communicates over said communications link, comprising the steps ofinitiating execution by said node of a node initialization program,after said initiation, requesting a remote storage access program by sending one of a small set of specialty messages over said communications link, and retrieving by said node said remote storage access program from the host over the communications link,execution of said retrieved remote storage access program to link said remote storage access program to a local storage interrupt service routine,in response to a local storage interrupt service request, execution by said node of said linked remote storage access program to emulate a local physical disk, send a message over said communications link to establish a communication session, said communication session permitting a protocol that is more complex than permitted by said set of specialty messages over said communications link, and initiate retrieval of an executable bootstrapping image over the communications link from a file on the host, by using the emulated local physical disk after the establishing of said communication session, andexecution by said node of said retrieved executable bootstrapping image.

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